Even if he's carted around as a show pony that's a lot more than I will be doing at 80. The real take away is that we need an upper age cap for holding federal office - 61 or younger to run/appointment and mandatory retirement at 70. We could try to say that office holders shouldn't have an age limit but be subjected to mental fitness tests, but those will end up being gamed or the results won't be released properly for national security reasons.